It's all about school/team spirit. Given the fact that the show doesn't feature your team but 2x per year if you're a good team (and far less if you're FCS), those fans are going to show up. They did South Dakota vs North Dakota last week. They've never been to South Dakota (where the show was) and it's been a couple years since they visited North Dakota. There's some talk they could make a first-time visit to Minnesota coming up. This week is a first-time visit to Memphis as they host SMU, who has come back into national prominence for the first time in decades after a major scandal. It's also all about the hype for the show and the game itself. People can get to those games hours and hours before, especially if the weather is favorable. When you have up to 120k people in the same area...why not get there early and take it all in? People who get there closer to kickoff risk traffic and parking headaches. It's choreographed to the point where they have the scripted intro and know what games they're going to talk about and at what times. It's the same with commercial breaks, the public interest features (so-and-so fan with cancer) but a lot of it is off-the-cuff. If you're a fan of college football, 12 hours on a Saturday can pass by in a blink.